Boost to h→Zγ: from LHC to future e+e− colliders

No, Jose Miguel; Spannowsky, Michael

Abstract

A precise measurement of the Higgs h→Zγ decay is very challenging at the LHC, due to the very low %SM h→Zγ(Z→ℓℓ) branching fraction and the shortage of kinematic handles to suppress the large SM Zγ background. We show how such a measurement would be significantly improved by considering Higgs production in association with a hard jet. We compare the prospective HL-LHC sensitivity in this channel with other Higgs production modes where h is fairly boosted, e.g.~weak boson fusion, and also to the potential h→Zγ measurement achievable with a future e+e− circular collider ({\sl fcc-ee}). Finally, we discuss new physics implications of a precision measurement of h→Zγ.

Citation

No, J. M., & Spannowsky, M. (2017). Boost to h→Zγ: from LHC to future e+e− colliders. Physical Review D, 95(1), Article 075027. https://doi.org/10.1103/physrevd.95.075027

• Journal Article Type: Article
• Online Publication Date: Apr 21, 2017
• Publication Date: Apr 21, 2017
• Deposit Date: Jan 5, 2017
• Publicly Available Date: May 26, 2017
• Journal: Physical Review D
• Print ISSN: 2470-0010
• Electronic ISSN: 2470-0029
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 95
• Issue: 1
• Article Number: 075027
• DOI: https://doi.org/10.1103/physrevd.95.075027
• Public URL: https://durham-repository.worktribe.com/output/1389247
• Related Public URLs: https://arxiv.org/abs/1612.06626